Home / 7,455.87-11,187.45-5,278.59

Finding the Fourth Proportional to 7,455.87, 11,187.45 and 5,278.59

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Solution

The fourth proportional to 7,455.87, 11,187.45 and 5,278.59 is: 7,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,455.87 : 11,187.45 = 5,278.59 : x
  2. Step 2: Convert to fraction form
    7,455.87/11,187.45 = 5,278.59/x
  3. Step 3: Cross multiply
    7,455.87x = 11,187.45 × 5,278.59
  4. Step 4: Simplify right side
    7,455.87x = 59,053,961.70
  5. Step 5: Solve for x
    x = 59,053,961.70/7,455.87
  6. Step 6: Final answer
    x = 7,920.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.